I find Wiwi's improvements to the out-of-date Stanz UI to be a must-have. If nothing else it shortens the time you need to spend in the loadout screen by a significant amount. The cooldown timers and alternate location for health/mana/stamina bars also make it much easier to manage your character's resources.

Now, I've never actually commed with the stock UI but with the changes this mod brings to the Comm screen, I can't imagine comming with the stock UI to be as easy and intuitive.